Improvement in machines for dressing, drilling, and finishing stone



2 Sheets--Sheet1.

H. WILLETT.

' Machine for. Dressing, Drilling and Finishing Stone.

w. H. DANIELS, & i.

Patented Jan. 3Q, 1872.

mutui n n l 2 Sheets-Sheet 2. W. H. DANIELS 8L J. H. WILLETT'.

Machine for Dressing, Driiiing and Finishing-sione.

Shi-.v4

l \\\\\v i3 @5% Nv: m Y @www 3% MM WILLIAM H. DANIELS AND JOSEPH H.WILLETT, OF BRYAN, OHIO.

IMPROVEMENT IN MACHINES FOR DRESSING, DRILLING, AND FINISHING STONE.

Specification forming part of Letters Patent No. 123,244, dated January30, 1872.

To whom it may concern:

Be it known that we, WILLIAM H. DANIELS, and J osEPH H. WILLETT, ofBryan, in the county of Williams and State of Ohio, have invented a newand useful Improvement in Machines for Dressing, Drilling', andFinishing Stones; and we do declare tha-t the following is a true andaccurate description thereof, reference being had to the accompanyingdrawing, and to the letters of reference marked thereon, and being apart of this specification, in which- Figure l is a perspective from oneside, and both front and rear of the machine are alike in everyparticular. Fig. 2 is an end view in perspective, and both ends are alsoalike. Fig. 3 is a plan View of the top. Fig. 4 is a detached view ofthe gearing.

Like letters indicate like parts in each figure.

The nature of this invention relates to the construction of amachine forsanding, gritting, honing, and polishing stone, with provision fordrilling, when required; the whole so arranged as to work rapidly andwith little power, thereby effecting a great saving in the labor andcost of dressing and polishing marble or other stone. The-inventionconsists, first, in an ingenious and novel adaptation of wellknownmechanical devices for driving those parts which operate upon the stone,while atthe same tim e they compel those parts to travel over the faceof the stone being worked. Second, in combination therewith, and with aproper frame, of the devices for elevating and lowering the operatingparts, to conform to the thickness ofthe stone being operated upon.

In the accompanying drawing, A represents the bed, upon which is imposedthe frame or adjustable bed B, which may be provided with wheels orrollers a., so that it may easily be drawn from under the operatingparts of the device to receive the stone to be operated upon. A frame,preferably of iron, is secured to the bed A. This frame consists of fourvertical rods. O, which sustain the operating parts of the device, andat the same time are guide-rods upon which the cross-heads D have avert-ical motion, so that the operating parts may be raised or loweredto conform to the thickness of the stone under operation. The cranks E,drums F, and chains G, with the sheaves or pulleys H, a set of eachbeing provided at each end of the machine, and the ends of the chainsbeing attached to the cross-heads D, are the means employed for raisingand lowering the working parts. The vertical rods of the frame aresecured together at top by proper longitudinal ties I and girts J. K arerods which connect the cross-heads D atA each end of the devicetogether, and to these rods are secured, by means of proper braces L,the opera-ting parts, and M are cranks by means of which said operatingparts are driven. The inner ends of the crank-shafts are provided withbevel-toothed wheels N which mesh into and give motion to the wheel O,which is rigidly secured to the shaft P, at the lower end of which, bymeans of a stirrup, Q, and bolts b, the devices hereinafter describedfor dressing the face of the stone are secured; and the bottom of theshaft may be so constructed as to receive a drill, d, when it is desiredto use one. By means of these cranks and wheels a rotary motion is givento the shaft and to the stone-dressing devices attached thereto. It is adouble rack, the ends of which are secured to the cross-heads D in sucha manner that lateral motion may be given to said rack in eitherdirection, sufficient to engage the teeth of one side of the rack withthe pinion S, and at the same time disengage the opposite side of therack. This device is designed, as the stone-dressing parts are rotated,to carry said parts over the face of the stone from one end to theother, when, by changing the position of the rack, as above indicated,the said parts travel to the opposite end of the stone. Motion iscommunicated to the pinion from the wheel T to which it is secured. Thiswheel T receives motion from the pinion Uwhich is secured to the top ofthe shaft. V is a box to hold sand, and W a similar box to hold water;bot-h boxes being provided with spouts h through which the sand andwater iiow, and with suitable devices for regulating said iiow.

In operation, a stone being' secured upon the bed B, the sand and waterboxes V and NV being properly iilled, the blocks for sanding, gritting,honing, and polishing, tin using the latter the liow of sand and wateris shut off,) are secured, respectively, as required, to the lower endofthe shaft P by means of the stirrnp Q and bolts b. Upon the crank Mbeing rotated it communicates asimilar motion to the blocks above namedthrough the medium ofthe gears N and O and shaft P; While the devicesllereinbefore described carry said dressing andV polishing blocksV theWhole length of the stone.

What We claim as our invention, and desire to secure by Letters Patent.is-

l. The mechanism for giving a rotary motion to the devices for dressingand polishing the stone, consisting of the cranks lWI, bevel-gears N andO, shaft P, and stirrup Q, in combination with that for giving ahorizontal mot-ion

